a {
    text-decoration: none;
}

.bg-red{
    background-color: red; 
}

.bg-black{
    background-color: black;
}

.w-50{
    width: 50px;
}

.w-100{
    width: 100px; 
}

.w-400{
    width:400px;
}

.w-450{
    width: 450px;
}